121 lines
3.7 KiB
Markdown
121 lines
3.7 KiB
Markdown
# Cheatsheet
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## Environment Setup
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```bash
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source ~/esp/esp-idf/export.sh # Activate ESP-IDF (every shell)
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```
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## Build & Flash
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```bash
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cd ~/git/esp32-hacking/get-started/csi_recv_router
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idf.py set-target esp32 # Set chip target
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idf.py menuconfig # Configure WiFi/UDP settings
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idf.py build # Compile firmware
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idf.py -p /dev/ttyUSB0 flash # Flash to device
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idf.py -p /dev/ttyUSB0 monitor # Serial monitor (Ctrl+] to exit)
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idf.py -p /dev/ttyUSB0 flash monitor # Flash + monitor combined
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idf.py fullclean # Clean build directory
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idf.py reconfigure # Re-fetch managed components
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```
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## Deployed Sensors
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| Name | IP | Location |
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|------|-----|----------|
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| muddy-storm | 192.168.129.29 | Living Room |
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| amber-maple | 192.168.129.30 | Office |
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| hollow-acorn | 192.168.129.31 | Kitchen |
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**Target:** `192.168.129.11:5500` (Pi) | **Cmd port:** `5501`
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## Remote Management (esp-cmd)
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```bash
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esp-cmd <ip> STATUS # Uptime, heap, RSSI, tx_power, rate
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esp-cmd <ip> IDENTIFY # LED solid 5s (find the device)
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esp-cmd <ip> RATE 50 # Set ping rate to 50 Hz (NVS saved)
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esp-cmd <ip> POWER 15 # Set TX power to 15 dBm (NVS saved)
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esp-cmd <ip> REBOOT # Restart device
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```
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Examples with deployed sensors:
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```bash
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esp-cmd 192.168.129.29 STATUS # muddy-storm
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esp-cmd 192.168.129.30 IDENTIFY # amber-maple
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esp-cmd 192.168.129.31 RATE 25 # hollow-acorn
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```
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### LED States
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| LED | Meaning |
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|-----|---------|
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| Off | Not connected to WiFi |
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| Slow blink (1 Hz) | Connected, no CSI activity |
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| Fast blink (5 Hz) | CSI data flowing |
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| Solid (5s) | IDENTIFY command active |
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## Test CSI Reception
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```bash
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nc -lu 5500 # Listen for CSI packets
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socat UDP-RECV:5500 STDOUT # Alternative listener
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nc -lu 5500 | head -1 # See one packet
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nc -lu 5500 | wc -l # Count packets/sec (Ctrl+C)
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```
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## Firmware Variants
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| Firmware | Dir | Output | Needs |
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|----------|-----|--------|-------|
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| csi_recv_router | `get-started/csi_recv_router/` | UDP | WiFi router |
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| csi_recv | `get-started/csi_recv/` | Serial | csi_send device |
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| csi_send | `get-started/csi_send/` | N/A | csi_recv device |
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## Key Config (menuconfig)
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| Path | Setting |
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|------|---------|
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| Example Connection Configuration → SSID | WiFi network name |
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| Example Connection Configuration → Password | WiFi password |
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| CSI UDP Configuration → IP | `192.168.129.11` |
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| CSI UDP Configuration → Port | `5500` |
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## CSI Data Format
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```
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CSI_DATA,seq,mac,rssi,rate,sig_mode,mcs,cwb,smoothing,not_sounding,
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aggregation,stbc,fec_coding,sgi,noise_floor,ampdu_cnt,channel,
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secondary_channel,timestamp,ant,sig_len,rx_state,len,first_word,"[I,Q,...]"
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```
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## Source Paths
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| File | Purpose |
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|------|---------|
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| `get-started/csi_recv_router/main/app_main.c` | Main firmware source |
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| `get-started/csi_recv_router/main/Kconfig.projbuild` | UDP/cmd port config |
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| `tools/esp-cmd` | Pi-side management CLI |
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| `get-started/csi_recv_router/sdkconfig.defaults` | SDK defaults |
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| `get-started/csi_recv_router/main/idf_component.yml` | Dependencies |
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| `get-started/csi_recv_router/CMakeLists.txt` | Build config |
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## ESP-IDF Paths
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| Path | Contents |
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|------|----------|
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| `~/esp/esp-idf/` | ESP-IDF v5.5.2 |
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| `~/esp/esp-csi/` | Original esp-csi examples |
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| `~/.espressif/tools/` | Xtensa toolchain |
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## USB Serial
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```bash
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ls /dev/ttyUSB* /dev/ttyACM* # Find connected devices
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dmesg | tail # Check USB detection
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sudo usermod -aG dialout $USER # Fix permissions (re-login)
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```
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